Frontend Engineer, Growth & Engagement Team

Phantom

Backend Engineer building and operating systems for growth features at crypto finance company. Designing microservices and feature-flag systems for experimentation and user engagement.

Posted 5/27/2026full-timeRemote • 🇺🇸 United StatesSeniorLeadWebsite

Tech Stack

Tools & technologies

JavaScriptMicroservicesNode.jsTypeScriptWeb3

About the role

Key responsibilities & impact

Design, implement, and maintain a feature-flag and A/B-testing framework that supports rapid launch, metric collection, and automated rollback of growth experiments.
Build and scale microservices for key growth features: referral program APIs, action-card engine, push-notification orchestration.
Instrument all services with real-time metrics, tracing, and logging; partner with Data teams to ensure clean event schemas and dashboarding.
Own on-call rotations for growth services, define SLAs, write playbooks for incident response, and drive post-mortem action items.
Partner closely with Product, Frontend, Design, and Analytics to translate hypotheses into backend solutions, remove blockers, and deliver end-to-end experiments.
Ensure all growth systems meet sub-100ms latency targets under load and maintain ≥99.9% uptime.

Requirements

What you’ll need

7+ Years of Backend Experience: Demonstrated success in building large-scale, high-availability systems in Node.js, TypeScript, NestJS (or similar frameworks).
Web3/Crypto Knowledge: Familiarity with on-chain data, wallet integrations, or decentralized application patterns is strongly preferred.
Strong System Design & Architecture Skills: Ability to translate product requirements into scalable, maintainable solutions, with a keen eye for performance trade-offs and fault tolerance.
Leadership & Communication: Experience mentoring engineers, leading technical initiatives, and collaborating effectively with cross-functional teams.

Benefits

Comp & perks

Competitive salary and equity
Comprehensive insurance (medical/dental/vision) — 100% covered
Stipend for your ideal remote set-up
Flexible hours and a supportive remote environment
Unlimited vacation: Take time when you need it (and we really mean it!)
401(k) retirement plan
Monthly wellness benefit
Weekly meal benefit
Global off-sites

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Node.jsTypeScriptNestJSmicroservicesfeature-flag frameworkA/B testingreal-time metricssystem designhigh-availability systemsperformance trade-offs

Soft Skills

leadershipcommunicationmentoringcollaborationproblem-solving